| 樟子松人工幼中龄林不同生长级林木叶面积分布 |
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| 引用本文： | 张文忠,沈海龙.樟子松人工幼中龄林不同生长级林木叶面积分布[J].东北林业大学学报,2011,39(4):43-45,124. |
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| 作者姓名： | 张文忠 沈海龙 |
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| 作者单位： | 兴安职业技术学院;东北林业大学; |
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| 基金项目： | 东北林业大学学术名师专项基金资助 |
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| 摘 要： | 根据东北东部山地3个地点7块样地的调查结果,分析了樟子松人工幼中龄林中不同生长级林木的叶面积分布状况.结果表明:①不同生长级林木之间叶面积有明显差异,以上层木叶面积最大,中层木次之,下层木最小,其中上层木与中层木之间的叶面积差异相对较小;②叶面积主要集中在树冠的中、上部,下部比例很小:③构成叶面积主要部分的都是1 a和...
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| 关 键 词： | 樟子松 林木生长级 叶面积分布 树冠层次 针叶年龄 |
Needle Area Distribution of Trees in Different Growth Classes from Young and Middle-Aged Plantations of Pinus sylvestris var. mongolica |
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| Zhang Wenzhong,Shen Hailong.Needle Area Distribution of Trees in Different Growth Classes from Young and Middle-Aged Plantations of Pinus sylvestris var. mongolica[J].Journal of Northeast Forestry University,2011,39(4):43-45,124. |
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| Authors: | Zhang Wenzhong Shen Hailong |
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| Institution: | Zhang Wenzhong(Xing'an Vocational and Technical College,Wulanhaote 137400,P.R.China),Shen Hailong(Northeast Forestry University) |
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| Abstract: | A study was conducted to analyze the needle area distribution of trees in different growth classes from young and middle-aged plantations of Pinus sylvestris var.mongolica by means of the data from 7 sample plots at 3 sites in eastern mountain region of Northeast China.Results showed that there was an evident difference in needle area among trees in different growth classes,that is,the needle area of trees in the upper storey was the biggest,followed by middle story and lower story,but there was little diff... |
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| Keywords: | Pinus sylvestris var mongolica Tree growth classes Needle area distribution Crown layers Needle ages |
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